Synthesis and microwave absorbing properties of Cobalt ferrite

2nd International Conference on New Material and Chemical Industry

材料科学;化学工业

Liu, H.Y.^1 ; Li, Y.S.^1

Department of Physics and Electronic Engineering, Heze University, Heze

274015, China^1

关键词: Annealing temperatures;    Chemical coprecipitation method;    Cobalt ferrites;    Measurements of;    Microwave absorbing properties;    Sample thickness;    Scanning electron micrographs;    Spinel structure;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/292/1/012062/pdf
DOI  :  10.1088/1757-899X/292/1/012062

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Cobalt ferrite power CoFe2O4was synthesized through the chemical co-precipitation method. The structure, morphology and microwave absorbing properties were studied by changing raw materials, annealing temperature and experimental steps. The measurements of X-ray diffraction and scanning electron micrograph suggest that annealed CoFe2O4sample is still a spinel structure. Moreover, the crystalline and grain sizes become large with the enhancement of annealing temperature. The measurements of microwave absorbing properties show that the reflection loss decreases continuously, and the wavelength of maximum absorption loss shift to short-wave limit as the sample thickness increases.